#A comment,this is so you can read your promgram later.
#Anything after the # is ignored by Ruby.

puts "I could have code like this." # and the comment after is ignored

#You can also use a comment to "disable" or comment out a piece of code:
#print "This won't run."

puts "This will run."

#就是一个注释，只是作为以后参考使用，能让其他人看懂你写的代码，#以后的注释内容并不会被显示出来
#不是说注释后的内容不会被显示出来，而是注释后的内容，ruby的解释器会忽略
